<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

    <form action="http://localhost:8083/add" method="post">
        姓名: <input type="text" name="username"><br>
        生日: <input type="text" name="birthday"><br>
        <input type="submit" value="提交">
    </form>
</body>
</html>